Global Business Travel Group, Inc.

Footnotes

F1

On September 29, 2026, pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated May 2, 2026, by and among the Issuer, Gaia Purchaser, Inc. ("Parent") and Gaia Merger Sub, Inc., a wholly owned subsidiary of Parent, the Issuer became a wholly owned subsidiary of Parent (the "Merger"). At the effective time of the Merger (the "Effective Time"), pursuant to the Merger Agreement, each share of Class A common stock, par value $0.0001 per share, of the Issuer ("Company Common Stock") held by the reporting person as of immediately prior to the Effective Time was automatically cancelled and converted into the right to receive cash in an amount equal to $9.50, without interest thereon (the "Per Share Price").↩ 1↩ 2

F2

As of immediately prior to the Effective Time, pursuant to the Merger Agreement, each award of restricted stock units of the Issuer (a "Company RSU") that was outstanding as of immediately prior to the Effective Time was automatically cancelled and converted into the right to receive an amount in cash, without interest and subject to applicable withholding taxes, equal to the product of (i) the Per Share Price and (ii) the total number of shares of Company Common Stock subject to such Company RSU as of immediately prior to the Effective Time.↩ 1

F3

Reflects securities held directly by PecosCo Limited Partnership, HMC Juweel Holdings, LP, Certares Sponsor Investor (Delaware) LLC and Clementine Holdings Ltd. Certares Sponsor Investor (Delaware) LLC is controlled by its largest common shareholder, Certares Travel Holdings, LP. Certares Management Limited is the General Partner of each PecosCo Limited Partnership, HMC Juweel Holdings, LP and Certares Travel Holdings, LP. Messrs. Michael Gregory O'Hara, Henry Briance and Spencer Marsden are the directors of Certares Management Limited and as such may be deemed to have voting and dispositive control of the securities held of record by PecosCo Limited Partnership, HMC Juweel Holdings, LP and Certares Travel Holdings, LP. Clementine Holdings Ltd. is ultimately owned by Mr. Michael Gregory O'Hara.↩ 1

F4

The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, the Reporting Person states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.↩ 1